Fisheye Lens – S5318620F69

S5318620F69 is 3-Megapixel M12 Fisheye Lens with Built-In IR Filter, 186° diagonal field of view (FoV), F2.0 aperture, , IP69K Waterproof Lens.

1.6mm M12 3MP Fisheye Lens

This 1.6mm M12 fisheye lens is designed for imaging systems that require an exceptionally wide field of view from a compact optical configuration. With 186° diagonal and horizontal FOV, 162° vertical FOV, 3MP resolution, F2.0 aperture, and IP69K protection, it is suitable for wide-area monitoring, embedded vision, robotics, and other demanding imaging applications.

M12 Fisheye Lens Highlights

• 186° ultra-wide FOV provides extremely broad scene coverage.
• 1.6mm focal length enables a compact fisheye imaging configuration.
• 3MP resolution supports detailed wide-area image capture.
• M12x0.5 mount is suitable for compact embedded camera modules.
• IP69K protection supports demanding applications exposed to water, dust, and high-pressure cleaning.

1.6mm M12 Fisheye Lens Applications

Core Applications

The combination of a 1.6mm focal length and 186° field of view makes this lens suitable for applications where maximizing image coverage is more important than maintaining a conventional rectilinear perspective.

Designed for ultra-wide fisheye imaging applications, this lens can be considered for:

• Wide-area monitoring cameras
• Embedded vision systems
• Robotics vision
• Surround-view imaging
• Panoramic imaging
• Indoor and outdoor monitoring
• Smart camera modules
• Compact machine vision systems
• Industrial environmental monitoring
• Intelligent imaging equipment

Its extremely wide field of view lets a single camera capture a large surrounding area, which can cut blind‑spot risks for use cases that demand broad environmental awareness.

For industrial vision projects, this lens can be evaluated alongside TOWIN’s Machine Vision Solutions.

Compatible Devices

The lens can be considered for use with compatible:

• 1/2.42″ ISX031 camera modules
• 3MP camera modules
• M12 embedded cameras
• Wide-area monitoring cameras
• Robotics cameras
• Smart vision cameras
• Compact industrial cameras
• Outdoor imaging modules
• Panoramic imaging systems

The M12x0.5 mount provides a compact mechanical interface. Before integration, engineers should verify sensor compatibility, image circle, lens-to-sensor distance, housing dimensions, and mechanical clearance.

Fisheye Optical Design

With 186° diagonal, 186° horizontal, and 162° vertical FOV, this lens is clearly designed for extremely wide-angle fisheye imaging.

Unlike conventional rectilinear lenses, fisheye optics intentionally compress a very large angular field into a relatively small image area. As a result, straight lines away from the image center may appear curved. This is an expected characteristic of fisheye imaging rather than a low-distortion optical design.

The listed F-θ distortion of < -7.9% should therefore be evaluated according to the F-θ optical model and should not be directly compared with conventional barrel or pincushion distortion specifications.

When the final application demands a corrected perspective, developers can run image calibration and dewarping via the camera ISP or downstream image‑processing system.

For more information about lens distortion and its influence on image geometry, see TOWIN’s Distortion Guide.

Wide-Area Imaging

The extremely broad field of view makes this lens particularly useful for applications where a camera needs to observe a large surrounding area from a fixed installation position.

For example, a fisheye camera can be used to monitor a room, machine environment, robotic workspace, or vehicle surroundings. The final usable coverage depends on the camera mounting height, orientation, sensor format, image-processing method, and required image quality across the field.

TOWIN’s Lens Selection Guide can help engineers compare focal length, sensor size, FOV, and application requirements.

High-Protection Optical Configuration

The lens uses a 6G + IRCF structure and an F2.0 aperture, providing a compact optical configuration for wide-angle imaging systems.

Its IP69K specification makes the lens suitable for applications where the optical assembly may encounter dust, water, or high-pressure cleaning conditions.

The IP69K rating applies to the specified lens. The actual environmental protection of a complete camera system depends on the camera housing, seals, connectors, cable interfaces, and overall mechanical assembly.

Frequently Asked Questions

Q: What is the field of view of this 1.6mm fisheye lens?
A: With the 1/2.42″ ISX031 sensor, the lens provides 186° diagonal, 186° horizontal, and 162° vertical FOV.

Q: Is this lens a fisheye lens?
A: Yes. The 1.6mm focal length and extremely wide 186° field of view are characteristic of a fisheye optical design intended for very broad scene coverage.

Q: What sensor is this lens designed for?
A: The specified FOV is measured with the 1/2.42″ ISX031 sensor, and the lens supports a maximum image format of Φ5.3mm.

Q: Is this a low distortion lens?
A: No. This is a fisheye lens. Its F-θ distortion specification should be evaluated according to its fisheye optical model rather than compared directly with conventional low-distortion lenses.

Q: What is the advantage of a 186° field of view?
A: A 186° FOV enables the camera to capture an exceptionally broad surrounding area from a single installation position, which is useful for panoramic, monitoring, robotics, and embedded vision applications.

Q: Can this lens be used for machine vision?
A: Yes, it can be considered for machine vision applications requiring extremely broad scene coverage. However, engineers should evaluate whether the application’s distortion tolerance and image-processing capabilities are compatible with fisheye imaging.

Q: Is the lens waterproof?
A: The lens is specified with an IP69K protection rating. The final protection of the complete camera system depends on the housing, sealing structure, connectors, and overall assembly.

Q: What is the mount type?
A: The lens uses an M12x0.5 mount, making it suitable for compatible compact camera modules and embedded imaging systems.

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